Shareholdings
| Concept | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 
|---|---|---|
| Shareholdings | ||
| Second largest holding company | ||
| Investment shares held for purposes other than pure investment | ||
| Shares not listed | ||
| Number of issues | — | 
                                                84
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Carrying amount | — | 
                                                3,179,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Number of issues whose number of shares increased | 
                                                5
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total acquisition cost for increased shares | 
                                                259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Reason for increase in number of shares | 
                                                4社は「地域活性化」、1社は「業務連携・提携」を目的に増加しております。
                                                
                                             | — | 
| Number of issues whose number of shares decreased | 
                                                1
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total sale amount for decreased shares | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Shares other than those not listed | ||
| Number of issues | — | 
                                                36
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Carrying amount | — | 
                                                25,914,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Number of issues whose number of shares increased | 
                                                2
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total acquisition cost for increased shares | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Reason for increase in number of shares | 
                                                株式分割のため、増加しております。
                                                
                                             | — | 
| Number of issues whose number of shares decreased | 
                                                7
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total sale amount for decreased shares | 
                                                147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |